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Key Concepts
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LLMs
Generation
LLMResult
Key Concepts#
LLMs#
Wrappers around Large Language Models (in particular, the “generate” ability of large language models) are at the core of LangChain functionality.
The core method that these classes expose is a generate method, which takes in a list of strings and returns an LLMResult (which contains outputs for all input strings). Read more about LLMResult.
This interface operates over a list of strings because often the lists of strings can be batched to the LLM provider, providing speed and efficiency gains.
For convenience, this class also exposes a simpler, more user friendly interface (via __call__).
The interface for this takes in a single string, and returns a single string.
Generation#
The output of a single generation. Currently in LangChain this is just the generated text, although could be extended in the future
to contain log probs or the like.
LLMResult#
The full output of a call to the generate method of the LLM class.
Since the generate method takes as input a list of strings, this returns a list of results.
Each result consists of a list of generations (since you can request N generations per input string).
This also contains a llm_output attribute which contains provider-specific information about the call.
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LLMs
Generation
LLMResult
By Harrison Chase
    
      © Copyright 2023, Harrison Chase.
      
  Last updated on Mar 22, 2023.